A21, Capital Building, 8 New Union Square, London, SW11 7AE

UPRN:10091502770Flat/Maisonette2 bedsBuilt -

LeaseholdCouncil Tax: Band GEPC: B (84)

Data freshness:Listing· freshPlanning· 4mo agoOwnership· freshEPC· 6mo agoRisk· 5mo agoConnectivity· 1mo agoSchools· freshAmenities· 2mo agoArea· Census 2021Council Tax· 1mo ago

A21, Capital Building, 8 New Union Square, London, SW11 7AE

HP Score

/ 100

Mixed

Verdict

yesterday

Verdict: INVESTIGATE, on a scale of Buy, Investigate, Avoid.
Mixed signals - investigate

Evidence

20 of 21 sources

Sale Estimate

£1,135,000

£908k - £1.36MLow

Estimate

£1.14M

Range

£908k – £1.36M

Rent Estimate (pcm)

£5,400

£5k - £6k

Monthly

£5,400

Yield

1.62%

Verdict

Derived from HomePortfolio scores

A21 earns an INVESTIGATE rating with HP Score 74/100. Investment score 71/100 reflects strong fundamentals. Crime intensity is moderate. Walkability is limited (68/100). Flood risk is not assessed: check the Environment Agency long-term flood map before offering. Tenure is leasehold. Every figure here comes from the live HomePortfolio API; anything it does not publish is left out.

Key SourcesEPC RegisterPortal listingsOfcom Connected NationsOfcom mobile coverageMarket estimates (third-party AVM)HM Land Registry sales matched to addressDefra strategic noise mapping, England Round 4 (Contains Defra data © Crown copyright and database right 2023-2024, Open Government Licence v3.0)Walk ScoreONS Census 2021Police.ukHM Land Registry company ownershipHM Land Registry covenantsHM Land Registry leasesHM Land Registry Price PaidPlanIt / council planning portalsOverture Maps PlacesOfsted / DfE GIAS

HP Score

74/ 100

Mixed

Investment Score

71/ 100

High

Crime Score

42/ 100

Elevated

Walkability

68/ 100

Moderate

Transit & Bike

Transit 43Bike 71

Walk Score, out of 100

Opportunity

Not scored as an opportunity

We will not put a number on this one.

asking price missing or outside scoring range

Withholding a score is deliberate. A number built on missing or stale inputs would look more certain than the evidence allows.

Economics

What happens to your money

Your assumptions

Purchase price£3,999,950

At the asking price

Monthly rent£5,400/mo

Evidenced range £4,900-£5,850

Interest rate5.4%

Loan to value75%

Cash required: £1,595,030
Net cash flow: -£9,761/mo
Cash on cash: -7.3%
Score at this price: -

After a 8% void allowance, 15% management and 10% maintenance. Lender coverage (rent ÷ interest): 0.40 - below the usual 1.25 test. These are your assumptions, not evidence: only the pre-filled rent and price come from the record.

Risks

What could kill this deal

Score confidence is low
largely a single source - treat the number as a prompt, not a conclusion

Property risk deep-dive →flood, subsidence, crime, environment - the full domain

Plan

Before you offer

1. Commission a full structural survey, not a basic condition report.
The score prices market evidence, not the fabric of the building.

Every step above was generated from a specific gap or flag in the evidence - no generic advice, no invented tasks.

Valuation & Market

Sale Estimate£1,135,000

Rent Estimate (pcm)£5,400

Gross Yield1.62%

1y Growth-22.5%

3y Growth-4.7%

5y Growth-0.1%

10y Growth-0.5%

Last Sold Price£1,050,000 (2016-05-13)

View Market Details

Risk Overview

Flood RiskUnknown
SubsidenceSignificant
RadonLow
MiningUnknown
LandslideLow
Air QualityLow
NoiseHigh

View Full Risk Report

Planning Activity

Recent Apps

0SW11 7AE

Approval Rate

-12mo

Development

low

26/03263/DET
Approval of details pursuant to Condition 17 (Overheating) of planning permission 24/02624/FUL (Development comprising the replacement of the 4th floor and erection of a 5th floor rooftop, the removal of the entrance canopy plus formation of a new entrance and seating area, erection of rear extension at all levels, together with alterations to car parking spaces and servicing arrangements. (Re-consultation due to revised description).) granted on 10.12.2025
Pending
26/07388/ADFULL
Detailed drawings of all new windows and external doors; pursuant to condition 4 of planning permission dated 23rd July 2026 (26/02493/FULL)
Pending
26/07387/ADFULL
Samples of the facing materials, including detailed drawings of the dormers, and windows including section drawings showing the glazing bars; pursuant to condition 3 and 4 of planning permission dated 4th September 2026 (26/04924/FULL)
Pending

View Planning Timeline

Ownership

Corporate Ownership42.2%
Overseas OwnershipNo
Lease Term Remaining999+ yrs
CovenantsRestrictive
Lease TypeLeasehold
Last Ownership Change2016-05-13
SourceLand Registry

View Ownership Details

Connectivity

Broadband (Standard)

12 Mbps

Mobile 4G/5G Coverage

EEThreeO2Vodafone

EV Charger

PTAL Rating

View Connectivity Map

Area Profile

Median EarningsLocal authority£49,310

Population Density-

Owner Occupied18%

Age Distribution

0-15 12%16-64 86%65+ 2%

View Area Profile

Schools Nearby

St Gabriel's CofE Primary School
0.3 mi
Good
Tachbrook Nursery School
0.3 mi
Area grades2025
Inspected after Ofsted withdrew the single overall grade.
Pimlico Academy
0.4 mi
Report card2026
Ofsted no longer awards a single overall grade.
Pimlico Primary
0.4 mi
Area grades2025
Inspected after Ofsted withdrew the single overall grade.

1 of 10 nearby schools with published figures were oversubscribed in 2026 - demand, not a catchment.

View All Schools

Comparables

View All

Capital Building, 8 New Union Square
-
£650k
-
Capital Building, 8 New Union Square
-
£850k
-
Capital Building, 8 New Union Square
-
£975k
-
Capital Building, 8 New Union Square
-
£720k
-

Boundary data not available for this property

No registered title polygon, building footprint, or street match for this property yet.

Why: No HMLR INSPIRE / OSM footprint / OS Open USRN match for this UPRN

Source: HM Land Registry INSPIRE / OpenStreetMap / OS Open USRN